Favipiravir Impurity 17 CAS 6329-74-4
| CAS No. | 6329-74-4 |
| Molecular Formula | C7H6BrNO2 |
| Molecular Weight | 216.03 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Favipiravir Impurity 17 (CAS 6329-74-4) is a certified pharmaceutical impurity reference standard with the molecular formula C7H6BrNO2 and a molecular weight of 216.03 g/mol.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, Favipiravir Impurity 17 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 216.03 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C7H6BrNO2 |
| Molecular Weight | 216.03 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Favipiravir Standards
- Favipiravir Impurity 3 (CAS 259793-88-9)
- Favipiravir Impurity 23 (CAS 440124-25-4)
- Favipiravir Impurity 19 (CAS 1257072-34-6)
- Favipiravir Impurity 24 (CAS CATO-C4X-210224)
- Favipiravir Impurity 23 (CAS 356783-14-7)
- Favipiravir Impurity 24 (CAS 6966-01-4)
- Favipiravir Impurity 16 (CAS 1023813-21-9)
- Favipiravir Impurity 4 (CAS 259794-06-4)
Recommended Standards
- P-nitrobenzyl bromide (CAS 100-11-8)
- 2-Nitrobenzyl Bromide (CAS 3958-60-9)
- 2-Amino-5-bromobenzoic acid (CAS 5794-88-7)
- 4,6-Dichloro-8-fluoroquinoline (CAS 1019016-87-5)
- Bexagliflozin Impurity 13 (CAS CATO-C4X-332213)
- Relugolix Impurity 193 (CAS CATO-C4X-2429193)
- Aripiprazole Impurity 28 (CAS 1359829-23-4)
- 1-[2-(Diethylamino)ethyl]-1H-pyrazol-4-amine (CAS 1152841-43-4)
- 2-[3-(trifluoromethyl)phenyl]cyclopentan-1-one (CAS 1344328-00-2)
- N-(3-Morpholinopropyl)acridin-9-amine (CAS 314261-85-3)
- 898794-62-2 1-(2,6-Dichlorophenyl)-3-(2,4-dimethylphenyl)propan-1-one DTXSID50644711 (CAS 898794-62-2)
- trans-Ambroxol Impurity 56 (CAS CATO-C4X-108556)
- Temuterkib (CAS 1951483-29-6)
- Insulin Degludec Impurity 18 (CAS CATO-C4X-215718)
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